US3112674A - Mortar without recoil brake - Google Patents

Mortar without recoil brake Download PDF

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Publication number
US3112674A
US3112674A US119862A US11986261A US3112674A US 3112674 A US3112674 A US 3112674A US 119862 A US119862 A US 119862A US 11986261 A US11986261 A US 11986261A US 3112674 A US3112674 A US 3112674A
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Prior art keywords
gun tube
mortar
collar
tube
elevation
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US119862A
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English (en)
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Jasse Joseph Raymond
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Hotchkiss Brandt SA
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Hotchkiss Brandt SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A23/00—Gun mountings, e.g. on vehicles; Disposition of guns on vehicles
    • F41A23/28—Wheeled-gun mountings; Endless-track gun mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A23/00—Gun mountings, e.g. on vehicles; Disposition of guns on vehicles
    • F41A23/52—Base plates for gun mountings
    • F41A23/54—Base plates for gun mountings for mortars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A27/00—Gun mountings permitting traversing or elevating movement, e.g. gun carriages
    • F41A27/06—Mechanical systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
    • F41F1/00—Launching apparatus for projecting projectiles or missiles from barrels, e.g. cannons; Harpoon guns
    • F41F1/06—Mortars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/38—Telescopic sights specially adapted for smallarms or ordnance; Supports or mountings therefor
    • F41G1/393—Mounting telescopic sights on ordnance; Transmission of sight movements to the associated gun
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/46—Sighting devices for particular applications
    • F41G1/50—Sighting devices for particular applications for trench mortars or for other mortars

Definitions

  • the present invention relates to artillery devices. con stitutd by mortars of the. type having no recoil brake. in which the reaction upon firing is transmitted to. the ground by a base plate on which the rear of the gun tube. bears.
  • the gun tube is maintained in the correct firing position by a biped fixed to. the tube at the muzzle end of the latter by a collar pivoted to the gun l ying or pointing c ew arrie by the biped.
  • the latter carries the aiming controls levar tion, direction, outof true) and a disconnecting device which penm'ts a e tain ec i a e o 't e un u e un firing wit ou h f inge b pe t is nnectin device being returned toits initial position byelastically v el able meansif
  • Such an arrangement is more parfcularly suitable for light artillery weapons whose component parts: base plate, gun tube, biped, can be easily handled by one man, but in the case of heavy artillery there are certain v
  • the principal drawback re 'des in the danger 'oftthe slidingotf the feet of the biped which could result in the Another drawback is encountered when the base plate sinks into theground to a great extent upon firing.
  • the idisconnectingdevice is liable to move to; ward the end of its travel and produce a shock when it reaches the end of the latter.
  • the disconnecting device Upon the return of the disconnecting device to its initial position, there is found a 'modification in the elevation of the mortar which is the greater as the sinking of the base plate is greater.
  • Ihe object of the invention is to provide a mortal with ut a r oi bra so mp ov d as to avoid the s o e mentioned drawbacks. ;In the mortar according to the in n ion. which d es n t. c mpr se biped an in which i the. guntube bears, in hefir ug p si ion, h ou h the me ium'ofa ball or swivel joi t pro ided a t rea nd on a base plate anchored in the ground, the gun tube havi'n'g'a h els. t e a is at th wheels being adjustable in position relative to the carriage assembly; v 1
  • the carriage assembly islso arranged thatthe ada t the. wheels of the suppoiting seto whe ls an be m ed t war i r away t o 'n t g n ube and/ r h fisdja on the latter.
  • FIG. -1 is an elevational view of the mortar improved in accorda c h h in e i a Pos tion f r firin at a large g e of l ti h the ba plateplac d on e g nd;
  • FIGS. 2 and 3 are corresponding rear and plan view respectively;
  • I 4 is an ele-vational view of the mortar in the n t g p n on a scale la r ha tha of. F GS.
  • FIG. 5 is an elevational view of the mortar in a position for firing at an angle of elevation of about 45 with its. base plate" sunk into the ground;
  • FIG. 6 is a longitudinal sectional view of the control device for the fine setting of the laying ,fQIfiOlGValZIOB', this view being taken along line 66 of FIG. I;
  • I 'FIG. 7 is a'sectional View taken along line 7-...7,ojf FIG. 6,;
  • Mn: 8 is a sectional view taken along line 8-8; of FIG. 1 of the cradle of the carriage for the control device fior laying .the mortar for direction;
  • FIG. 10 is a sectional view of a disconnecting device for the connection between the collar and the cradle;
  • vFIG- 11 is a c i v ew of a c n ro device-f r rendering the cradle horizontal;
  • FIG. .12 is a view in the direction of arrow f (FIG. ,4), Pa y in s o f h as em y form d y he carri and the set of wheels; i 3
  • FIG. 14 is a similar sectional View taken along line 14 -14 of FIG. 12 of the locking device-for lookingithe set o ee to h arr age; Y
  • FIG. 15 is a similar sectional view taken along line 15 .I5 of FIG. 12 of the pivotal connection of the cradle on the part of the carriage in which theaxle of the set of wheels is journalled; ,ll.
  • FIG. 1 6, and the base plate beingshown partially in V FIG. -19 is a sectional view takenalong line.1 9f-'- 19' of FIG. 18; 7
  • FIG. 22 is a corresponding plan view thereof
  • FIG. 23 is a cross-sectional view of the fixing device 2 fixing the base plate to the gun tube in the transporting position;
  • FIG. 24 is a plan view of the half-collars of this device.
  • FIG. 25 is an end elevational view of the member fixing the base plate to the gun tube through the medium of the half-collars.
  • the mortar comprises a gun tube A loaded through the muzzle 1.
  • This gun tube has an axis UU and rests on the ground through two support devices.
  • the first of these support devices constitutes a gun carriage assembly having a supporting set of wheels which is movable along the gun tube A and whose axis VV corresponding to the wheels 2 is adjustable relative to the axis UU of the tube A.
  • This carriage assembly comprises a collar B movable along the tube A by means of a device C which provides a fine setting of the aiming or laying the mortar for elevation.
  • This collar rests on a cradle D along which it is movable transversely by means of a device for aiming or laying the mortar for direction E.
  • the collar B forms with the cradle a triangulated support system owing to provision of an elastically yieldable disconnecting device F.
  • the cradle D is mounted on a support G for pivotal movement about an inclined axis WW contained in the vertical longitudinal plane of symmetry of the carriage assembly. It is also connected to the cradle support by a lateral device H whose length is adjustable and which permits rendering the cradle D horizontal irrespective of the transverse obliqueness of the support G.
  • Rotation of the axle 3 about its axis causes the axis VV of the wheels 2 to describe a cylindrical surface concentric with the axis XX.
  • the second support device for the gun tube A is of the known type having a base plate K anchored in the ground and against which the tube A bears through the medium of a ball swivel joint L which permits oscillations of the tube substantially throughout the hemisphere situated above the upper plane of the base plate.
  • a device N for rendering the gun tube A stationary relative to the cradle D when transporting (FIG. 4);
  • the laying or pointing of the mortar for elevation depends on the vertical position of the axis VV of the wheels 2 relative to the axis XX of the axle 3, and on the position of the collar Bthat is, the position of the carriage assembly along the gun tube A (compare, for example, the positions shown in FIGS. 1 and 5).
  • the laying for elevation can be roughly obtained by means of the device I which adjusts the relative positions of the axes VV and XX, the fine setting being accomplished by'the device C which shifts the collar B along the gun tube, A.
  • FIG. 1 shows the gun tube in almost vertical position, the axis VV of the wheels being lower than the axis X-X of the axle and the collar B being relatively near t the rear ball joint L.
  • the gun tube is much nearer to the horizontal since the axis of the wheels is higher than that of the axle and the collar B is located nearer the muzzle 1 of the tube A.
  • the gun tube A comprises (FIGS. 1 to 3) a muzzle 1, a screw thread 4 (FIGS. 4 and 5) which constitutes a rack, the latter being formed in an extremely simple manner by a small-pitch helical thread. Adjacent the' screw, there is a smooth rear portion which is extended by the breech 5 which latter terminates in the swivel joint ball L.
  • the gun tube can have a rifled bore if desired.
  • the collar B is adapted to move along the gun tube A and consists of a cylindrical sleeve having two lugs 6 (FIGS. 4, 5 and 8, 9) slidable along the cradle D, and a fork 7 for the pivotal mounting of the disconnecting device F.
  • This collar is slidable along the tube A by means of the device C which effects the fine setting when laying the mortar for elevation.
  • This device C (FIGS. 4 to 7) comprises a case in two parts 8, 8 attached by welding or otherwise, to the collar B. Screw-threadedly mounted in the part 8 is a worm 9 one of the journals of which carries outside the case a hand-wheel 10 for the fine setting when laying the mortar for direction. This worm 9 is meshed with a worm wheel 11 for transmitting motion in one direction only, this worm Wheel being rotatably mounted by a sleeve 12 in a bearing 13 formed in the case 8.
  • the worm wheel 11 is connected by a friction clutch to the shaft 14 of a gear wheel 15 which extends through an opening 16 in the case and meshes with the screw threads 4 of the gun tube A.
  • This friction clutch is of the type having friction discs and comprises a metal driven disc 17 which is connected to the shaft of the gear 15 and clamped between two friction elements 18 and 19, the element 18 bearing against a ring 20 attached to the worm wheel 11.
  • the clamping is effected elastically by a stack of elastic washers 21 and is regulatable by means of a nut 22 which bears against the washers.
  • This clamping is so regulated that the maximum torque capable of being transmitted by the clutch is such that, on the one hand, no slip is possible in the course of the ordinary operations of laying the mortar for elevation and no undesired sliding of the collar occurs along the gun tube owing to the weight of the various elements, and, on the other hand, the gun tube A is capable of sliding in the collar B by causing slip of the clutch upon firing if the base plate K sinks into the ground thereby avoiding any alteration in the setting of the laying for elevation.
  • the collar B and the mortar laying device C are supported on the cradle support D.
  • the cradle support D (FIGS. 1 to 5 and 8, 9, 12, 15) comprises a rigid fork composed of a tubular cross-member 23 and two box-lil e side elements 24 which arrangement renders the fork L-shaped when viewed in side elevation (FIGS. 8, 9 and 15).
  • This fork is reinforced by two parallel spacing tubes 25 fixed to the spigots 25a carried by the side elements 24 (FIGS. 9 and 10).
  • the collar B is pivoted by its lug 6 to one of the spacing tubes 25 and is capable of being moved transversely along this tube by means of the device E laying the mortar for direction.
  • the device E (FIGS. 2, 3, 8, 9 and 12) comprises a slide 26 movable along the two spacing tubes 25. This slide is inserted between the two lugs 6 of the collar B 30 in the side elements 24 and carries at one end a handwheel 31 for laying for direction which it sufiices to turn in one direction or the other to shift the collar B, and in consequence the tube A, transversely of the cradle D to the right or to the left.
  • the disconnecting device F (FIG. is so constructed that it can lengthen or-shorten when the gun tube A tends to modify its angular position relative to the cradle D. This could occur, for example, upon firing owing to a rearward movement of the base plate K. In this way the stress on the tubes 25 of the cradle is decreased.
  • the device F comprises two heads 32 and 33 which are pivoted respectively by pins 34'and 35 in the fork 7 of the collar E (FIGS. 4 and 5) and in a fork 36 provided at the end of the transverse member 26 of the device E (FIGS. 4, 5, 8 and 9); Screw-threaded in the head33 at 37 is a bolt 38 which carries slidable thereon a ring 39 which bears through the medium of a flange 40 against an inner flange 41 of a sleeve 42 screwed at 43 in the head 32.
  • the sleeve 4-2 and the bolt 38' have such lengths that at rest the'underside of the head 44 of the bolt is flush with the face 45 of the head 32 and the ring 39 bears against the head 33 in the bottom of the cavity formed by a protecting and water-tight sleeve 46 which upwardly extends the head 33 and is provided with a sealing ring 47 in which the sleeve 42 is slidable.
  • a stack of elastic washers, partially shown at 48- in FIG. 10, is disposed ar-oundthe bolt 38 and bears in thenormal illustrated extended position against the faces 44 and 45 and against the ring 39.
  • the cradle support G (FIGS lZ and comprises a tubular element 49 to which is connected an arm 50 carrying a journal 51 having an axis WW.
  • a journal 51 having an axis WW.
  • Rot-atably mounted on this journal is a sleeve 52 rigidly secured to the cr-oss member 23 of the cradle D; the latter is therefore capable of turning about the axis W'W.
  • the cradle is rendered horizontal transversely thereof by the adjusting device H (FIGS. 11 and 12), the cradle turning about the axis W-W for this purpose.
  • the adjusting device H comprises a link having a length which is adjustable by means of a screw and nut arrangernent.
  • the nut 53 (FIG. 11) constitutes the end of a first tube 54 "which is pivoted'to a fork 56 by a pin 55 (FIG. 12), this fork being secured to the tubular element 49.
  • the screw 57 of the arrangement is journalled at 58 iv in a second tube 59 provided laterallywith an outer 1 lug 60 which is pivoted by a pin 61'toa fork.62 (FIGS.
  • the screw 57 can be rotated by 'a handwheel 63 and apair of bevelgears 64, '65 (FIG. 11);
  • the transverse hori- 1 zontality of the cradle D can be obtained irrespective of I the inclination of the cradle support G whose element 49 has a, position whichidepends on that of the set of wheels 1-.
  • This set of wheels comprises (FIGS; lto 5 and 12 to.
  • an axle 3 having an axis XX formed by a tube mounted for rotation about the axis XX through the medium of two bearing faces 66' in the element 49- of the'cradle supportG.
  • the axle 3 comprises a set of torsion strips 67 centered in the axle 3 by two sleeves 68. Fixed to the ends of the strips are two arms 69 each of which carries at its free end the stub axle 70 of one of the support'wheels 2 (FIGS-.-4and 5).
  • the supporting set of wheels I canbe turned about the cradle support G' aboutthe axis X -X;'of theaxle 3 by the device I which roughly lays the mortar for eleva tion.
  • a sl eeve 72 provided with outer fiuting 72 Keyed to the latter by inner fiuting 73 is a worm wheel 73 which meshes with a worm 74 which is rotatable by the handwheel 75 through the medium of gears 76 and 77 forthe rough setting when laying for elevation.
  • the worm 74 and'the shaft 78 of the handwheel are journalled a case 79 which is fixed at 80 (FIG. 12). to the tubular element 49'of the cradle support G and rests at 81 on the sleeve 73.'
  • a sliding collar 82 (FIGS. 12 and 14) is permanently engaged by inner flirting 82 the outer fiuting 49 provided on the end of thetubular, element 49 and is capable of engaging the fluting 72 of the sleeve 72. It is constantly urgedv toward the left (as viewed in FIG.
  • worm wheel is fixed to the sleeve by a screw 92 (FIG; 12).
  • FIG. 1' shows the-mortar in the .iiring position at a firing angle of 75 withI-the base" plate K resting on the ground.
  • the wheel-carrying-arms' 69 are downwardly inclined and the wheels '2. are there fore lowered and spaced away from the gun tube A so as to maintainthe' collar B away fronrthe ground and improve the stability of the weapon;
  • @FI *5 shows the mortar in the firing position at 45 with e'zba'se zp'late sunkiinto' the ground.
  • the arms69 aresb: directed that thecollar B is as near as possible .to the ground
  • the breech-5- offthe tube A is connected to thebaseplate K bythe'pant-spherical a 7 end L engaged in a part-spherical socket 93 provided in a detachable plate 94 which bears against the plate K through the medium of a part-conical face 95 and is held in position by a ring 96 secured by screws 97.
  • the torque to which the tube A is subjected by the projectile if it is rifled, is absorbed by a shaft 98 having an axis YY which is engaged in an oblong aperture 99 formedin the breech ball end L and in round apertures 100 formed in two ears 101 integral with the detachable plate 94'.
  • These around apertures communicate with one of the faces of the ears by way of a slot 102 whose entrance has a width less than their diameter and equal to the width of the oblong aperture 99 in the ball L.
  • the slots 102 are parallel with a flat face 103 formed on the plate 94.
  • the shaft 98 has a flat shape whose thickness equals the width of the oblong aperture and it comprises a central diamond-shaped portion (FIG. 17) disposed in the aperture 99 and two end portions each of which has a part-cylindrical cross-sectional shape and comprises two fiat faces 104 the distance between which is very slightly less than the width of the slots 102.
  • the shaft 98 is pivoted to the ball L by a screw 105 whose axis ZZ (FIG. 16) is oblique and situated in the vertical plane P-P of symmetry of the base plate (FIG. 17)
  • the ball L comprises a flat face 106 parallel with the large faces of the aperture 99.
  • the gun tube A is presented in an inclined position relative to the base plate K so as to put the flat face 106 of the ball in contact with the fiat face 103 of the plate 94.
  • the flat faces 104 of the shaft 98 permit engaging the latter in the slots 102 of the ears 101 of the plate 94.
  • the tube A is thereafter swung about the axis YY so as to bring it into the firing position; this position can make an angle of 30 to 90 relative to the base plate K.
  • the oblong shape of the aperture 99 combined with the diamond shape of the shaft 98 permits a certain oscillation of the gun tube about the axis Z-Z of the screw 105 in the plane normal to the plane of fire so as to permit regulating the out of true.
  • the gun tube is connected to the plate by a universal joint having two orthogonal axes of rotation Y--Y and Z-Z.
  • the conicity and the diameter of the bearing face 95 of the plate 94 are so chosen as to provide a frictional torque which is such as to prevent rotation of the plate 94 relative to the base plate K upon firing (the coetficient of friction can even be a low one).
  • the gun tube A is freely rotatable in the collar B, which facilitates laying for direction during which the gun tube has a tendency to turn in this collar which precludes any reaction which could otherwise have been exerted by the tube on the cradle and on the gun carriage when the gun tube under the action of the projectile upon firing initiates a movement of rotation.
  • the gun laying apparatus or sight can be mounted by means of a dovetail assembly on the end of an arm fixed to the collar B.
  • the gun laying apparatus is advantageously mounted in the manner shown in FIGS. 18 to 20 on a support arm 107 elastically applied against the tube A by four flat faces 108 which form therebetween in pairs a certain angle x which is preferably roughly 90" (FIG. 19) and are provided on the ends of four studs 109 carried by said support arm and freely extending into holes 110 provided in the collar B.
  • studs 109 are applied through the medium of their faces 108 against the gun tube A by a spring 111 which bears against a washer 112 carried by one of the ends of a stud 113 whose other end bears by way of a part-spherical washer 114 and a conical washer 115 against the support arm 107.
  • the stud 112 is slidable in a member -116 which is for example welded to the collar B.
  • the member 116 comprises an aperture 117 in which is engaged the end (in the shape of an olive) of a screw 118 screwed into the support arm 107. This screw prevents the latter from turning about the axis of the stud 113 relative to the member 116 and the collar B.
  • a spring 119 permits taking up the lateral play between the collar B and the support arm 107 by applying the olive-shaped end of the screw 118 against the member 1-16.
  • the female part 120 of the dovetail arrangement adapted to support the mortar laying apparatus (not shown in the drawings) is mounted at the end of the support arm 107 in such manner as to permit a certain adjustment of the plane of sight so as to render it parallel with the plane of fire and to cause the angle of elevation of the mortar laying apparatus to coincide with the actual angle of elevation of the axis of the gun tube A.
  • the female part 120 of the dovetail arrangement is orientable owing to the provision of a stern 121 which carries this part 120, this stem being pivotable owing to the provision of a portion of a ball 122 which has a centre Q and is mounted in a part-spherical support face or socket formed in a cup 123 rigid with the support arm 107.
  • the screws 124, 130 in contact with a plate 125 pivot the part 120 about the axis intersecting the points of contact between the screws 124 131 and this plate.
  • the screws 124', 131 pivot the part 120 about the axis intersecting the points of contact between the screws 124, and the plate (this axis is perpendicular to the first-mentioned axis).
  • a spring 126 presses the dovetail part 120 against the plate 125 through a nut 127 screwed on the stem 121, a conical washer 128 and a part-spherical washer 129. The latter is centered in the support arm 107 so that during the adjustments the washer 128 slides on the washer 129 whose part-spherical face is concentric with the ball 122.
  • the screws 124, 124*, 130 and 131 are held stationary by means of conical screws such as 124' (FIG. 19) which spread apart the split ends of the adjusting screws.
  • the laying for elevation is thereafter regulated by acting on the aforementioned screws 132, 133 which are in contact with a shaft 134 rigid with the dovetail part 120 and these screws are held stationary by conical screws (not shovm in drawings).
  • the dovetail part 120 is fixed in position by tightening the nut 127 until the washer 129 is applied against the support arm 107.
  • a device N for fixing the gun tube to the transporting means (FIGS. 4, 21 and 22); the gun tube A is clamped on the tubular element 49 of the cradle support by two half-collars 135 which are pivoted at 136 to the arm 50 attached to the element 49.
  • An elastic clamping is obtained by means of two levers 138 and springs 139, the levers resting against supports 140 when the tube A is free for firing.
  • a device 0 for fixing the base plate K to the gun tube A is supported by the gun tube through the medium of the socket in which is engaged the 'ball L (FIG. 4) and through the medium of two half-collars 141 (FIGS. 23 to 25) which are elastically clamped by a lever 142 and a spring (not 'shownin the drawings) disposed in .a case 143.
  • These levers are pivoted at 144 to collars 145 secured to a shaft 146 the ends of which latter are provided with fiat faces 1-47 which permit-engaging them through narrow entrances 148 into apertures 149 (FIG. 25 formed in ears 150* rigid with a plate 151 attached to the base plate.
  • Mortar of the type having means for laying the gun tube for elevation and in which mortar the gun tube in the firing position rests on a base plate connected to the breech end of the gun tube and placed on the ground, and on a support device supporting the gun tube in a region inter-mediate the ends of the gun tube, said support device comprising a carriage" assembly on which the gun tube is mounted to be unadjustable in angular position in the planeof fire relative to the carriage assembly, and a set of supporting wheels for resting on the ground and connected to the carriage assembly in such manner as to be movable relative to the carriage assembly in a path affecting the angle of elevation of the gun tube, said means for laying the gun tube for elevation consisting of a control'device mounted on the carriage assembly and operatively connected to the wheels foradjustin-g and maintaining the wheels in any selected position in said path.
  • Mortar of the type having means for laying the gun tube for elevation and means for laying the gun tube for direction and in which mortar the gun tube in the firing position rests on a base plate connected to the breech end of the gun tube and placed on the ground, and on a support device supporting the gun tube in a region intermediate the ends of the gun tube, said support device comprising a carriage assembly having a collar in which the gun tube is axially slidably mounted, a cradle on which the collar is mounted to be unadjustable as concerns angular movement relative to the cradle, a set of j supporting wheels for resting on the ground and connected to the carriage assembly in such manner as to be movable relative to the carriage assembly in a path allecting the angle of elevation of the gun tube, said means for laying the gun tube for elevation consisting of a first control lar and the gun tube for holding the gun tube in the desired axial position in the collar and constituting a finesetting device for laying the gun tube for elevation.
  • Mortar of the type having means for laying the gun tube for elevation and in which mortar the .gun tube in the firing position rests on a base plate connected to.
  • a support device supporting the gun tube in a regionintermediate the ends of the gun tube comprising a carriage, assembly having a collar mounted on the gun tube, a cradleya pivotal con- 'nection between the cradle and collar to permit the collar the gun tube relative to the cradle upon firing so as to" limit the maximum torque to which the cradle and in;
  • said support device further comprising a set of supporting wheels for resting on the ground and connected to the carriage assembly in such manner as to be movable relative to the carriage assembly in'a path affecting the angle of elevation of the gun tube, said means for laying the gun tube for elevation consisting of a control device mounted on the carriage assembly and operatively connected to the wheels for adjusting and maintaining the wheels in any desired position in said path.
  • Mortar of the type having means for layingthe gun tube for elevation and in which mortar the gun" tube in the firing position rests on a base plate connected to the breech end of the gun tube and placed on the ground, and on a support device supporting the gun tube in a region intermediate the ends of the gun tube, said support device comprising a carriage assembly having a collar in which the gun tube is mounted, a cradle on which the collar is mounted to be unadjustable in angular position in the plane of fire but free I to move along the cradle transversely of the carriage assembly, and a device operatively interconnecting the collar and the cradle for adjusting the position of the collar on the cradle transversely of the carriage assembly and constituting a device for laying the gun tube for direction, said support means further comprising a set of supporting wheels for resting on the ground, 'arms pivotally mounted on the carriage assembly and carrying the supporting wheels, said means for laying the guntube V for elevation consisting of a control device mounted on the carriage
  • the carriage assembly comprises a cradle support, a pivotal connection between the latter and the cradle to permit the cradle to pivot about an axis contained in the vertical longitudinal plane of symmetry of the'carriage assembly and inclined to the vertical in said plane in all angles 11 of elevation of the gun tube for firing, connecting means of adjustable length interconnecting the cradle support and the cradle at points other than said pivotal connection so as to permit insuring at all times that the cradle is horizontal transversely of the carriage assembly.
  • said cradle support comprises a tubular element, and said arms are mounted on the carriage assembly by an axle secured to the arms and rotatively mounted in the tubular element.
  • control device adjusting the position of the wheels comprises a handwheel, a worm rigid with the handwheel and mounted on said cradle support and a wormwheel rigid with said axle and meshing with the worm.
  • control device adjusting the position of the wheels comprises a handwheel, a worm rigid with the handwheel and mounted on said cradle support and a wormwheel rigid with said axle and meshing with the worm.
  • Motar as claimed in claim 12 comprising a releasable locking device interposed between the axle and the tubular element for locking the axle against rotation in the latter when transporting the mortar.
  • connection between the gun tube and base plate is a ball and socket joint which comprises a cross-shaft which is held in position relative to the base plate and extends through the ball and has a cross-section including flat parallel sides which engage flat parallel faces provided on the ball and positively maintains the ball stationary as concerns rotation of the ball about the axis of the gun tube relative to the base plate, the cross-shaft being pivotable relative to the ball about an axis which is perpendicular to said fiat sides and inclined relative to the axis of the gun tube thereby permitting a transverse oscillation of the gun tube for the purpose of correcting any out of true.
  • Mortar as claimed in claim 16 wherein a fiat face provided on the ball permits a rapid insertion and locking of the ball in the socket in combination with a corresponding flat face in the detachable plate, said flat faces when in contact with each other resulting in such relative positions between the ball and the detachable plate that the flat sides on said cross-shaft are in position for passage through entrances provided in cars formed on the detachable plate for the rotatable mounting of the cross-shaft.
  • Mortar as claimed in claim 5 comprising a mortar sight, a support carrying the mortar sight and having flat bearing faces extending in two parallel planes which are convergent transversely of the gun tube, means interconnecting said sight support and the collar so that said planes are held parallel with the gun tube, and means interposed between the collar and said sight support for biasing the bearing faces against the gun tube, whereby the sight support is always held in direct contact with the gun tube.
  • Mortar as claimed in claim 18, comprising a dovetail arrangement for securing the motar sight to the sight support, ball and socket means interconnecting the dovetail arrangement to the sight support, and adjusting screws for adjusting the angular position of the dovetail arrangement relative to the sight-support.
  • Mortar as claimed in claim 19 comprising releasble clamping means operatively interconnecting the ball and the socket of the ball and socket means for releasably locking the ball and socket means for releasably locking the ball and socket in their relative position after having adjusted the position of the dovetail arrangement by means of the adjusting screws.
  • Mortar as claimed in claim 1 comprising openable half-collars pivoted to the carriage assembly and combined with quick-acting spring-loaded locking levers, said half-collars being adapted to be clamped round the gun tube by said locking levers for holding the gun tube stationary on the carriage assembly for transport, and similar openable half-collars detachably pivoted to the base plate and quick-acting spring-loaded levers combined with the last-mentioned half-collars for clamping the latter round the gun tube and holding the base plate stationary relative to the gun tube for transport.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Toys (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Handcart (AREA)
  • Braking Arrangements (AREA)
US119862A 1960-06-28 1961-06-27 Mortar without recoil brake Expired - Lifetime US3112674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR831408A FR1269146A (fr) 1960-06-28 1960-06-28 Mortier sans frein de recul

Publications (1)

Publication Number Publication Date
US3112674A true US3112674A (en) 1963-12-03

Family

ID=39273908

Family Applications (1)

Application Number Title Priority Date Filing Date
US119862A Expired - Lifetime US3112674A (en) 1960-06-28 1961-06-27 Mortar without recoil brake

Country Status (9)

Country Link
US (1) US3112674A (fi)
BE (1) BE605183A (fi)
CH (1) CH372952A (fi)
DE (4) DE1300843B (fi)
ES (1) ES269001A1 (fi)
FI (1) FI44094B (fi)
FR (1) FR1269146A (fi)
GB (1) GB930446A (fi)
NL (9) NL6500913A (fi)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303742A (en) * 1965-05-18 1967-02-14 Robert J Thierry Full ball and socket assembly
US3315566A (en) * 1964-07-28 1967-04-25 Rheinmetall Gmbh Gun-carriage
US4787290A (en) * 1986-09-10 1988-11-29 Salgad International Ltd. Support apparatus for a grenade thrower tube
US4791852A (en) * 1985-10-14 1988-12-20 Thomson-Brandt Arements Mobile mortar firing unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182010A (en) * 1936-04-20 1939-12-05 Sageb Sa Piece of ordnance
US2325560A (en) * 1938-07-30 1943-07-27 Wauters Jean Ordnance
US2478898A (en) * 1945-12-11 1949-08-16 Jr John E Darr Mortar sight
US2566393A (en) * 1947-12-22 1951-09-04 Orrin J Wolfe Cantilevered trailer wheel suspension

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL56198C (fi) * 1936-04-20
NL58341C (fi) * 1936-12-31
US2364055A (en) * 1944-01-08 1944-12-05 Pierre F Berry Sight
US2572882A (en) * 1947-07-02 1951-10-30 Edgar C Roberts Mortar sight bracket and sight
US2814118A (en) * 1955-02-14 1957-11-26 Paul I Evans Sight mount for a rocket launcher
BE561549A (fi) * 1956-10-11
US2876545A (en) * 1957-12-19 1959-03-10 Gabrusti Magur-Lag Mortar sight

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182010A (en) * 1936-04-20 1939-12-05 Sageb Sa Piece of ordnance
US2325560A (en) * 1938-07-30 1943-07-27 Wauters Jean Ordnance
US2478898A (en) * 1945-12-11 1949-08-16 Jr John E Darr Mortar sight
US2566393A (en) * 1947-12-22 1951-09-04 Orrin J Wolfe Cantilevered trailer wheel suspension

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315566A (en) * 1964-07-28 1967-04-25 Rheinmetall Gmbh Gun-carriage
US3303742A (en) * 1965-05-18 1967-02-14 Robert J Thierry Full ball and socket assembly
US4791852A (en) * 1985-10-14 1988-12-20 Thomson-Brandt Arements Mobile mortar firing unit
US4787290A (en) * 1986-09-10 1988-11-29 Salgad International Ltd. Support apparatus for a grenade thrower tube

Also Published As

Publication number Publication date
NL124801C (fi)
DE1300843B (de) 1969-08-07
FI44094B (fi) 1971-04-30
NL6500913A (fi) 1965-03-25
DE1578013B1 (de) 1970-04-23
GB930446A (en) 1963-07-03
NL6500912A (fi) 1965-03-25
NL6803039A (fi) 1968-05-27
ES269001A1 (es) 1962-01-01
NL120144C (fi)
NL6500911A (fi) 1965-03-25
DE1188477B (de) 1965-03-04
BE605183A (fr) 1961-10-16
NL133935C (fi)
DE1578012A1 (de) 1969-10-23
NL124800C (fi)
FR1269146A (fr) 1961-08-11
NL266414A (fi)
CH372952A (fr) 1963-10-31

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